Seems it's not just Safari. I'm on firefox, laptop, with firefox up-to-date.

I have managed to buy two things, two sellers, by clicking Buy It Now.  But even then it took several goes as at check-out I kept getting a red banner error message when I try to Add Note for Seller, which is required to state the Colour / Size I want, and the red banner takes you out of check-out and as it's Buy It Now I was left with an empty Basket.

I cleared cache and cold-booted in case it was a problem on my device. No problems elsewhere on the internet. The same problem arose some weeks ago with posts on the discussion boards, also affecting several browser makes.

It's particularly a problem as I can't Add To Basket to buy different sizes of an item that are on the same page via a drop-down menu - clicking Add To Basket just doesn't do anything - and I want the combined postage that happens via Simple Delivery; if I buy them individually postage would be about £27 instead of about £4 with combined postage! Ditto re several other multi-choice items.

Lots of sales are apparently being lost due to this. Please sort this out urgently, eBay thanks.

Two hours spent on this and only two purchases to show for it. I'm giving up for today.